Geohazard monitoring for reservoir and dam safety and sustainability

In this paper geohazards and their monitoring are considered in the general context of reservoirs and dams. Demonstration is given of a systematic methodology, based on interrelation matrices, to analyze a system of multiple geohazards (multi-hazards) and corresponding monitoring parameters. It is shown how multi-source monitoring can through this methodology be linked to various multi-hazards. Geohazard interrelations are evaluated, as well as monitoring values indicative of different safety levels. The interrelations established have general relevance to reservoirs and dams. This is briefly explained through the case of a large reservoir in Iceland. The methodology constitutes the basis for a comprehensive safety and risk management, which can be used in planning and designing a monitoring program for other infrastructures, and/or a specific geohazards, such as volcano, landslide and more.